Careem and UBER are two options.
But PS, with driver, you will have 20k additional fixed cost, and you will need to have the car running for about 8-12 hours daily to make a reasonable savings, and the 2006 Alto will not be able to withstand that kind of torture (especially with drivers) much and will balance out the profits earned, with its never ending repairs in long term and devaluation in resale (due to more wear and tear), and you will almost be at breakeven at the end (no real profit in long term).
Profits will be eaten by maintanence, devaluation of car, driver and other unexpected outcomes (minor accidents and other).
That's is my point of view on old car with driver. Real facts may vary.
If someone is driving on their own or driving a trouble less car, then its good.
For info regarding Careem
https://drive.careem.com